Improvement in locks



UNITED STA'I'Es A'rEN'r OFFICE.

FRANK Goruns, oF GLEVELAND, yoHIo.

Spccification forming part of Letters Patent No. 142,335, datedfieptenher 2, 1873; application filed March 7, 1873.

To all whom it may concern Be it known that I, FRANK Gonms, ofCleveland, in the county of Guyahoga and State of Ohio, have invented anew and Improved Revolving Serew-Bolt Lock, of which the following is aspecification This invention relates to that class of locks in Which abolt is thrown out with a key 5 and consists in the peeuliarconstruction of the bolt and face plate, whereby it is made to revolvewhen thrown out, and being made in the form of a screw securely holdsthe two parts joined by the lock together. It is peculiarly adapted toall uses to which a bolt-lock is required.

The following is a description of its construction and operation.

Referring to the accompanyin g drawing, Figure 1 is an elevation of myimproved lock having the outside plate removed to show the interiorparts. Fig. 2 is an edge or end view of the lock, showing the face plateand the end of the bolt.

A represents the case of a lock of the usual' which is attached to thesliding-plate G by a swivel, which allows it to turn or revolve, thebolt passing out through the end of the lock through a hole fitting thescrew-bolt, and

which causes the bolt to revolve when moved out or in. The plate F, intowhich the bolt passes, and which is attaehed opposite to the face plateof the lock, has an opening conforming to the shape of the bolt, andserves as a nut which fits the bolt.

This Construction and arrc ngement of the bolt adapts the lock to agreater range of use than the square bolt, and is equally useful fordrawer-locks, trunk-locks, or lids of any kind, or for foldin'g-doors,the screw on the bolt preventing the separation of the two parts loekedwithout revolvin g the bolt. i

I claim- A screw-bolt, D, swiveled to the plate by which it is thrownand retracted, and revolved by means of a correspondingly-formed openingin the end of the lock-case and catch-plate, when operated by the key,substantially as described.

FRANK GORRIS.

Witnesses Geo. W. TIBBIrrs, D. L. WooD.

